Add Capybara.

Gemfile

@@ -39,6 +39,10 @@ group :development, :test do
   gem 'binding_of_caller'
 end
 
+group :test do
+  gem 'capybara'
+end
+
 gem 'simple_form'
 gem 'omniauth-twitter'
 gem 'dragonfly'

Gemfile.lock

@@ -33,6 +33,12 @@ GEM
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
     builder (3.1.4)
+    capybara (2.2.1)
+      mime-types (>= 1.16)
+      nokogiri (>= 1.3.3)
+      rack (>= 1.0.0)
+      rack-test (>= 0.5.4)
+      xpath (~> 2.0)
     coderay (1.1.0)
     coffee-rails (4.0.1)
       coffee-script (>= 2.2.0)
@@ -63,8 +69,11 @@ GEM
       treetop (~> 1.4.8)
     method_source (0.8.2)
     mime-types (1.25.1)
+    mini_portile (0.5.2)
     minitest (4.7.5)
     multi_json (1.9.2)
+    nokogiri (1.6.1)
+      mini_portile (~> 0.5.0)
     oauth (0.4.7)
     omniauth (1.2.1)
       hashie (>= 1.2, < 3)
@@ -149,6 +158,8 @@ GEM
     uglifier (2.5.0)
       execjs (>= 0.3.0)
       json (>= 1.8.0)
+    xpath (2.0.0)
+      nokogiri (~> 1.3)
 
 PLATFORMS
   ruby
@@ -156,6 +167,7 @@ PLATFORMS
 DEPENDENCIES
   better_errors
   binding_of_caller
+  capybara
   coffee-rails (~> 4.0.0)
   dragonfly
   jbuilder (~> 1.2)